【SpringCloud】导入既存工程，yel配置文件打不开

报错信息：
Plug-in "org.springframework.ide.eclipse.boot.properties.editor.yaml" was unable to instantiate class "org.springframework.ide.eclipse.boot.properties.editor.yaml.SpringYamlEditor".

解决方案：
yml文件右键菜单选择【Open With→YEditor YAML Editor】